cmake : use list(APPEND ...) instead of set() + dedup linker (#9463)
* cmake : use list(APPEND ...) instead of set() + dedup linker
ggml-ci
* cmake : try fix sycl
* cmake : try to fix sycl 2
* cmake : fix sycl build (#9469)
* try fix sycl build
* use CMAKE_CXX_FLAGS as a string variable
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Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>
* one more CMAKE_CXX_FLAGS fix (#9471)
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Co-authored-by: Michael Podvitskiy <podvitskiymichael@gmail.com>